• Mouths wide open: yawning as a communicative behavior in dogs 

        Author(s):Hoff, Anna E.
        Date Issued:2010
        Format:masters theses
        Yawning is an action humans are very familiar with, yet this behavior is not unique to our species. Most vertebrate animals demonstrate yawning behavior. The cause of yawning is still uncertain, but yawns across vertebrate ...